Nicet Level 2: Earth Work Already Rated A+

Nicet Level 2: Earth Work Already Rated A+ What does the Sand Cone Method Determine? In-place density of soil and aggregates Mass for sand cone test should be recorded to nearest? Sand cone test can also be used to determine? 0.01lbs Moisture content and dry mass of excavated soil How to determine percent compaction? Dry Density/Lab max density x 100 What size particles should not be used during the sand cone test? particles passing #200 sieve and non-retained in #10 sieve What does the proctor test determine? Non-Cementous with few to no Moisture density relationship of soils and soil-aggregates What size molds are used for the proctor test? What size rammers are used for the proctor test? 4" molds and 6" molds 5lbs with 12" drop and 10lbs with 18" drop How many blows are required per mold for proctor test? 6" mold How many lifts are required per mold for proctor test? requires 5 lifts 25 blows for 4" mold and 56 blows for 4" mold requires 3 lifts while 6" mold What is the requirement for compacted depth for proctor test? What is the purpose of Nuclear Density Gauge? 5" Determines density of compacted material When is backscatter method for nuclear density gauge used? inches are concerned such as HMA When properties of the first few When properties are within 2"-12" When is Direct Transmission for nuclear density gauge used? are concerned such as compacted backfill What is the spacing for multiple nuclear density gauge that are being conducted? be spaced 30' from each other What are the requirements when preparing to do the nuclear density test? Each test has to 6" away from verticle projections and 24" away from a wall What is the void space underneath the nuclear density gauge? 1/8" What is the Wet Density test requirements for single direct transmission in soil conditions? .94lb/ft^3, SP: .74lb/ft^3 ML: 1.28lb/ft^3 What is the wet density test requirement for backscatter in soil conditions? ML: 3.39lb/ft^3 What is the wet density test requirements for single operator in soil conditions? SP: 1.29% ML: .99% What is the visual identification for Coarse Gravel? CL: .97% Particle of rock that will pass 3" but be retained in 3/4" sieve What is the visual identification for fine gravel? CL: Particle of rock that will pass 3/4" and be retained on a #4 Sieve What is the visual identification of Coarse Sand? retained in #10 sieve What is the visual identification of medium sand? Particle of rock that will pass #4 sieve and be Particles of rock that will pass #10 sieve and be retained on a #40 sieve What is the visual identification of fine sand? on a #200 Sieve Particles of rock that will pass #40 and be retained What is the visual identification and classification for Silt? plastic or slightly plastic with little to no strength when dried. 1. Soil passing #200 sieve that is non 2. Fine grained portion of soil with plasticity index greater to equal to 4. What is the visual identification for organic silt? properties Sufficient organic content to influence soil What is the visual identification and classification of clay? properties) within range of water contents 1. Exhibits plasticity (putty like 2. Fine grained or the fine grained portion of soil with plasticity index greater or equal to 4 What is the visual identification of peat? Composite in various stages of decomposition, dark brown to black, produces organic odor and spongy consistency What is the Particle "Gravel" designation letter? What is the Particle "Sand" designation letter? What is the designation letter for " Well Graded"? What is the designation letter for "poorly graded"? What is the designation letter for "Clay"? Letter "G" Letter "S" Letter "W" Letter "P" Letter "C" What is the designation letter for "Silt"? Letter "M" What is the designation letter for "Lean" or low plasticity? Letter "L"